Means for unloading floatable cargoes



J. REID.

MEANS FOR UNLOADING FLOATABLE CARGOES.

APPLlCATION HLED NOV. 12, 1919.

Patented, Mar. 8,1921.

UNITED STATES JOHN REID, OF NEW YORK, N. Y.

MEANS FOR UNLOADING FLOATABLE CARGOES.

Specification of Letters Patent.

Patented Mar. 8, 19521.

Application filed November 12, 1919. Serial No. 337,608.

1'0 all w/wm it may concern:

Be it known that I, JOHN Ran), a subject of the King of Great Britain,and residing at 30 Church street, in the city of New York, in the Stateof New York, in the United iitates of America, have invented a new anduseful Means for Unloading Floatable Cal-goes, of which the following isthe specilication.

The invention relates to means for unloading floatable cargoes, asdescribed in the present specification and illustrated in theaccompanying drawings that form part of the same.

The invention consists essentially of the novel means employed, wherebyon canting a ship by means of her water ballast a force is employed,which drives any deck load into the water and lifts the floating piecesover any interrupting projection.

he objects of the invention are to facilitate the discharge of the cargoof pulp wood from vessels in that trade or of any other floatablematerial that may advantageously be dumped into the water alongside; toimsure despatch for wood carrying vessels and thereby reduce the expenseof the transportation and increase the number of trips of these ships inany one season or period; to eliminate manual labor in handling the woodat the destination of the cargo; and generally to provide efficiency andcheapness in such operations.

In the drawings, Figure 1 is a side elevation of a ship, showing themeans for unloading floatable cargoes.

Fig. 2 is a plan view of the ship, showing the preferable positions ofunloading nozzles.

Fig. 3 is a transverse section, showing the ship in process ofunloading.

Fig. 4: is a transverse section showing the unloading process at a laterstage.

Like numerals of reference indicate corresponding parts in each figure.

Referring to the drawings, the numeral 1 indicates a ship of thecustomary type used in the transportation of pulp wood, though the styleand shape generally of the ship does not materially affect thisinvention, except that the wing ballast tanks 2 and 3 aid effectively incarrying out the purposes of this device.

The general method of unloading is to cant the vessel to facilitate theriddanoe of the deck load and to flood the holds 4 in order to float thewood up through the hatchways.

There is some difliculty in disposing of the deck load though much of itwill tumble off into the water alongside especially if the wing tanksare alternately filled, but in this invention, the latter is really nota necessity and so far as the deck load is concerned, it is not requiredto cant the vessel at all, though it may be an advantage.

The floating of the wood over the 00amings of the hatohways is also anawkward proposition and this has to be overcome.

In the present invention the numeral 5 indicates a turbine water pumpfrom which the pipe 6 extends to the upright pipes 7 and 8, the pipe 7being aft of the holds 4: and the pipe 8 forward of the holds with thedeck 9 between said pipes.

The upper ends of the pipes 7 and 8 terminate in the swivel bearings l0and 11 carrying the brackets 12 and 13, and communicate with the nozzles14: and 15.

The nozzles 14 and 15 are pointed in the direction desired by thehandles 16 and 17 and are so mounted as to cover any part of the deck 9or hatchways and thereby direct a forceful stream of water to the deckload to clear it off or to the upper layer of Wood from the holds thatis floating at or about the coamings and lift the pieces over into theWater alongside.

Briefly the preferable way of operating this invention is to first clearthe deck load by directing strong streams of water from the nozzles onto the pieces of wood. This will have the eflect of driving the woodinto the water alongside and leave the hatch- Ways free. 'Greaterdespatch may be exercised by canting the vessel during the deckclearing, however as the deck load is mostly on a slanting surfaceinclined to either side of the ship, it will be readily driven off bythe jets of Water.

The completion of the discharge of the deck load is followed by floodingthe holds and in this Way lifting the wood up to the hatchways, where itis caught in the jets and quickly driven over the coamings into thewater alongside.

Some changes may be made both in the construction and operation withoutdeparting from the spirit of the invention, and so long as these changesare within the scope of the claims for novelty following, the protectionaccorded shall not be invalidated.

What I claim is 1. In means for unloading floatable cargoes, thecombination with acargo carrier vessel, of a swiveled nozzle directedfrom one end of the hold openings and adapted to sweep the area of thefloating pieces with a stream to drive them over the coamings andobstructions into the water alongside, and a tubular connection to saidnozzle from Water under pressure.

2. In means for unloading fioatable cargoes, the combination with acargo carrier vessel having floodable holds as cargo space, of swivelednozzles, each mounted at an elevation in respect to the deck level andadapted to direct streams, slightly deviating from the longitudinal lineof the vessel thereby sweeping the pieces of cargo raised by Water in ahold over the coamings and side of the vessel, and a turbine pumpsuitably operated and connected to said nozzles.

3. A means for unloading fioatable cargoes in which the cargo is floatedup to the coamings or rails comprising means for directing a stream ofWater under pressure into the Water floating the cargo and therebycreating turbulent action and a direct drive to discharge the pieces ofcargo over the side of the vessel.

Signed at the city of New York, N. Y., U. S. A. this 28th day ofOctober, 1919. JOHN REID.

